Lucknow/Raipur, Dec 27 (SocialNews.XYZ) Uttar Pradesh's Deputy Chief Minister, Keshav Prasad Maurya and Chhattisgarh's Deputy Chief Minister Arun Sao on Friday joined the nation in paying heartfelt tributes to former Prime Minister Dr Manmohan Singh, who passed away on Thursday night. Speaking to IANS, Keshav Prasad Maurya said, “The whole country is mourning the demise of Dr Manmohan Singh. He dedicated his entire life to the service of the nation.